diff --git a/core/proto/android/server/connectivity/data_stall_event.proto b/core/proto/android/server/connectivity/data_stall_event.proto
index 21717d8..a82326f 100644
--- a/core/proto/android/server/connectivity/data_stall_event.proto
+++ b/core/proto/android/server/connectivity/data_stall_event.proto
@@ -25,6 +25,7 @@
     VALID = 1;
     INVALID = 2;
     PORTAL = 3;
+    PARTIAL = 4;
 }
 
 enum ApBand {
@@ -86,4 +87,4 @@
     repeated int32 dns_return_code = 1;
     // Indicate the timestamp of the dns event.
     repeated int64 dns_time = 2;
-}
\ No newline at end of file
+}
diff --git a/packages/NetworkStack/src/android/net/metrics/DataStallStatsUtils.java b/packages/NetworkStack/src/android/net/metrics/DataStallStatsUtils.java
index 17a36ad..c96411e 100644
--- a/packages/NetworkStack/src/android/net/metrics/DataStallStatsUtils.java
+++ b/packages/NetworkStack/src/android/net/metrics/DataStallStatsUtils.java
@@ -46,6 +46,8 @@
             return DataStallEventProto.VALID;
         } else if (result.isPortal()) {
             return DataStallEventProto.PORTAL;
+        } else if (result.isPartialConnectivity()) {
+            return DataStallEventProto.PARTIAL;
         } else {
             return DataStallEventProto.INVALID;
         }